The root cause was Azure fragmenting and delivering packets out of order from the NPS server. We needed to get Azure to enable UDP Fragment reordering as this behavior is by design.https://github.com/MicrosoftDocs/azure-docs/issues/69477
We were on 8.10.170 since it came out and ran into this issue on Monday (hmm DST happened Sunday). Upgraded to 183 based on TAC advice, no change. My debugs look exactly the same as the OP, the bug is logged this week. I have a 3504 controller with ...